Pages in this set

Page 1

Information taken from BBC Bitesize
25/05/2011

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Information taken from BBC Bitesize
25/05/2011

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Information taken from BBC Bitesize
25/05/2011

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Design & Technology
Materials
The material types used in D&T Resistant Materials are woods, metals, plastics, ceramics and
composites. Each of these has its own characteristic working properties such as strength,
malleability, conductivity, toughness and durability.

Types of materials
You need to be familiar with the different properties of ferrous…

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Plasics are divided into thermoset plastics and thermoplastics. The main difference between the
two is that thermoplastics can be heated and shaped many times, while thermoset plastics can only
be heated and shaped once.

Composite materials
Composite materials are formed by combining and bonding two or more materials a reinforcing…

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The ability of a material to conduct heat or electrical energy.

Strength
The ability of a material to withstand a force without breaking or bending.

Elasticity
The ability of a material to bend and then to return to its orginal shape and size.

Plasticity
The ability of a material to…

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Timbers
There are two types of timber: softwood and hardwood.

Softwood timbers usually come from coniferous trees that is, evergreen, needleleaved,
conebearing trees such as fir and pine. They do not have the hard cell structure that gives
hardwood trees their name.

Hardwood timbers come from broadleaved, deciduous trees, and…

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Safety during the making of the product

A laboratory

To ensure safety during making, a designer needs to consider the following:

Will any of the materials specified cause harm to the maker?
Will any of the processes to be used cause harm to the maker?
Will any of the finishing…

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A rubbish tip

To ensure safety when a product is disposed of, a designer needs to consider the following:

Can the component parts and different materials be dismantled without harm?
Will dismantling result in the release of toxic or harmful substances?
Will recycling materials, eg melting down, cause release of…

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and equipment. When using equipment, personal protective equipment should be used, including by
other workers nearby if necessary. All guards and other protective devices should be in place at all
times when the equipment is in use.